VisTrails Home

User:Tohline/ThreeDimensionalConfigurations/BinaryFission

From VisTrailsWiki

(Difference between revisions)
Jump to: navigation, search
Line 65: Line 65:
* '''<font color="darkblue">Space Shuttle Flights</font>''' (circa 1992):  Experiments illustrating the dynamical behavior of liquid drops were evidently also conducted during a couple of space shuttle missions.  The experiments were performed with the aid of a "Drop Physics Module (DPM)" inside the "portable" United States Microgravity Laboratory (USML) that was housed in the shuttle's payload bay.
* '''<font color="darkblue">Space Shuttle Flights</font>''' (circa 1992):  Experiments illustrating the dynamical behavior of liquid drops were evidently also conducted during a couple of space shuttle missions.  The experiments were performed with the aid of a "Drop Physics Module (DPM)" inside the "portable" United States Microgravity Laboratory (USML) that was housed in the shuttle's payload bay.
-
** The first mission &#8212; [http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-50.html USML-1 during shuttle flight STS-50] &#8212; took place in early 1992. According to [http://www.jpl.nasa.gov/releases/95/release_1995_9571.html information provided by NASA/JPL's public information office], "&#8230; the transition of rotating liquid drops into a 'dog-bone,' or two-lobed shape, was studied in detail &#8230;"  Detailed results from DPM experiments during the USML-1 mission have been published in the Journal of Fluid Mechanics:  T. G. Wang, A. V. Anilkumar, C. P. Lee and K. C. Lin (1994).  ''Bifurcation of rotating liquid drops: results from USML-1 experiments in Space.'' [http://dx.doi.org/10.1017/S0022112094002612 Journal of Fluid Mechanics, 276, pp 389-403]
+
** [[File:fluid_drop.jpg|100px|right|frame|USML-1 Droplet Fission]]The first mission &#8212; [http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-50.html USML-1 during shuttle flight STS-50] &#8212; took place in early 1992. According to [http://www.jpl.nasa.gov/releases/95/release_1995_9571.html information provided by NASA/JPL's public information office], "&#8230; the transition of rotating liquid drops into a 'dog-bone,' or two-lobed shape, was studied in detail &#8230;"  Detailed results from DPM experiments during the USML-1 mission have been published in the Journal of Fluid Mechanics:  T. G. Wang, A. V. Anilkumar, C. P. Lee and K. C. Lin (1994).  ''Bifurcation of rotating liquid drops: results from USML-1 experiments in Space.'' [http://dx.doi.org/10.1017/S0022112094002612 Journal of Fluid Mechanics, 276, pp 389-403]
 +
** I think that the three-frame black &amp; white image shown here on the right presents a result from mission USML-1.  That is how this image is referenced in an [http://www.phys.lsu.edu/astro/movie_captions/fission.html online discussion of fission] that I put together about a decade ago.
** The second mission &#8212; [http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-73.html USML-2 during shuttle flight STS-73] &#8212; took place in the fall of 1995. It does not appear as though the fission of liquid drops was an element of these USML-2 DPM experiments.
** The second mission &#8212; [http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-73.html USML-2 during shuttle flight STS-73] &#8212; took place in the fall of 1995. It does not appear as though the fission of liquid drops was an element of these USML-2 DPM experiments.

Revision as of 20:46, 1 January 2014


Contents

Fission Hypothesis of Binary Star Formation

Whitworth's (1981) Isothermal Free-Energy Surface
|   Tiled Menu   |   Tables of Content   |  Banner Video   |  Tohline Home Page   |

Qualitative Illustration

Figure 1
Droplet Fission

Skylab Drop Dynamics Experiment (1975)
(Youtube video)

Figure 2
Hachisu & Eriguchi scenario
Hachisu & Eriguchi (1984)
(Astrophysics and Space Science, 99, 71)

Related Discussions

Fission in Nuclear Physics

The nuclear physics community also draws an analogy between the fission of a rotating fluid drop and the spontaneous fission of atomic nuclei; see, for example, the figure associated with the Wikipedia discussion of the energetics of nuclear fission.

Drop Dynamics Experiments

[On 1 January 2014, J. E. Tohline wrote ...] As I was putting this chapter together, I had difficulty documenting the various drop dynamics experiments that have been conducted by astronauts in various Earth-orbiting (zero g) environments. Here is the relevant information that I have found, to date:

  • Skylab (circa 1973-1974): Experiments showing the fission of liquid drops were evidently conducted during the Skylab 2, Skylab 3, and Skylab 4 missions.

According to the Teacher's Guide mentioned above, the activities shown in the above-referenced films were carried out by three teams of Skylab Astronauts:

Skylab Astronauts

Kerwin blows water droplet from a straw


Skylab 2 (First Team)

  • Space Shuttle Flights (circa 1992): Experiments illustrating the dynamical behavior of liquid drops were evidently also conducted during a couple of space shuttle missions. The experiments were performed with the aid of a "Drop Physics Module (DPM)" inside the "portable" United States Microgravity Laboratory (USML) that was housed in the shuttle's payload bay.
    • USML-1 Droplet Fission
      The first mission — USML-1 during shuttle flight STS-50 — took place in early 1992. According to information provided by NASA/JPL's public information office, "… the transition of rotating liquid drops into a 'dog-bone,' or two-lobed shape, was studied in detail …" Detailed results from DPM experiments during the USML-1 mission have been published in the Journal of Fluid Mechanics: T. G. Wang, A. V. Anilkumar, C. P. Lee and K. C. Lin (1994). Bifurcation of rotating liquid drops: results from USML-1 experiments in Space. Journal of Fluid Mechanics, 276, pp 389-403
    • I think that the three-frame black & white image shown here on the right presents a result from mission USML-1. That is how this image is referenced in an online discussion of fission that I put together about a decade ago.
    • The second mission — USML-2 during shuttle flight STS-73 — took place in the fall of 1995. It does not appear as though the fission of liquid drops was an element of these USML-2 DPM experiments.
  • International Space Station (circa 2000):
    • See the two "Gallery of Fluid Motions" mpg movies that accompany the preprint by Ueno et al. (2012).

Online References

Whitworth's (1981) Isothermal Free-Energy Surface

© 2014 - 2020 by Joel E. Tohline
|   H_Book Home   |   YouTube   |
Appendices: | Equations | Variables | References | Ramblings | Images | myphys.lsu | ADS |

Personal tools